<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">{{age | Toup}}</div>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <script>
        // 全局的过滤器
        Vue.filter('Toup', (str) => {
            return str.toUpperCase()
        })
        var mv = new Vue({
            el: "#app",
            data: {
                age: 'zs'
            },
            // 私有的过滤器
            // filters: {
            //     Toup(str) {
            //         return str.toUpperCase()
            //     }
            // }
        })
    </script>
</body>

</html>